HEUER, N. Low-dimensional bounded cohomology and extensions of groups. MATHEMATICA SCANDINAVICA, [S. l.], v. 126, n. 1, p. 5–31, 2020. DOI: 10.7146/math.scand.a-114969. Disponível em: https://www.mscand.dk/article/view/114969. Acesso em: 4 dec. 2024.